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VOL. 5, ISSUE 3 (2023)
Ecological studies on Aonidiella aurantii and Saissetia oleae infesting olive trees at Northeastern of Delta, Egypt
Authors
Naglaa M Youssef, Dina M Taksira
Abstract
The California red scale, Aonidiella aurantii (Maskell)
(Hemiptera: Diaspididae) and the olive black scale, Saissetia oleae
(Olivier) (Hemiptera: Coccidae) are of the most important hemiptrous insects. The
present investigation aimed to study some ecological aspects of these pests in
olive orchards in to governorates of Dakahlia (Aga district) and Damietta (Kafr
El Battikh district) during a whole year (from the 1st of June 2021
till the 31st of May 2022). The obtained data showed that both of A.
aurantii and S. oleae exhibited four peaks of seasonal activity during
the studied year in Aga and Kafr El Battikh districts. The highest activity of A.
aurantii was recorded during autumn season; while, the highest activity of S,
oleae was recorded during summer season. The most populations of A.
aurantii and S. oleae were distributed on the twigs at the height of
1 meter from the ground (contributed approximately 50% of the collected populations)
in comparison with the heights of 2 and 3 meters. Daily temperature degrees and
relative humidity had insignificantly positive effects on A. aurantii
and negative effects on S. oleae populations. On another hand, relative
humidity was more effective on the populations of the two scale insects than
temperature degrees.
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Pages:21-27
How to cite this article:
Naglaa M Youssef, Dina M Taksira "Ecological studies on <i>Aonidiella aurantii</i> and <i>Saissetia oleae</i> infesting olive trees at Northeastern of Delta, Egypt". International Journal of Agriculture and Plant Science, Vol 5, Issue 3, 2023, Pages 21-27
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